A wallet contains 4 bills with denominations of $1, $5, $10 and $20. You choose two of the four bills from the wallet at random and find the sum of the dollar amounts. What is the probability of getting $15? And what is the probability of getting $50.

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

The table above shows approximate conversions from gallons to liters. what is the value of x?

Find the area of an equilateral triangle with a side of 6 inches